Emerson Dissolved Oxygen Sensor Model 430 DO Owner's manual

Brand: Emerson

Model: Dissolved Oxygen Sensor Model 430 DO

Category: Oxygen Equipment

Type: Owner's manual

This manual is also suitable for

430 Dissolved Oxygen Sensor

Model 430 DO

Dissolved Oxygen Sensor

Instruction Manual

PN 51-430/rev.A

May 1996

CAUTION

SENSOR/PROCESS

APPLICA

TION COMPATIBILITY

The wetted sensor materials may not be

compatible with process composition

and operating conditions. Application

compatibility is entirely the responsibili-

ty of the user.

DANGER

HAZARDOUS AREA INSTALLATION

Installations near flammable liquids or in hazardous

area locations must be carefully evaluated by qual-

ified on site safety personnel. This sensor is not

Intrinsically Safe or Explosion Proof.

To secure and maintain an intrinsically safe instal-

lation, the certified safety barrier, transmitter, and

sensor combination must be used. The installa-

tion system must comply with the governing

approval agency (FM, CSA or BASEEFA/CEN-

ELEC) hazardous area classification require-

ments. Consult your analyzer/transmitter instruc-

tion manual for details.

Proper installation, operation and servicing of this

sensor in a Hazardous Area Installation is entirely

the responsibility of the user.

ESSENTIAL INSTRUCTIONS

READ THIS PAGE BEFORE PROCEEDING!

Rosemount Analytical designs, manufactures, and tests its products to

meet many national and international standards. Because these instru-

ments are sophisticated technical products, you must properly install, use,

and maintain them to ensure they continue to operate within their normal

specifications. The following instructions must be adhered to and integrated

into your safety program when installing, using, and maintaining Rosemount

Analytical products. Failure to follow the proper instructions may cause any

one of the following situations to occur: Loss of life; personal injury; proper-

ty damage; damage to this instrument; and warranty invalidation.

• Read all instructions prior to installing, operating, and servicing the prod-

uct. If this Instruction Manual is not the correct manual, telephone 1-800-

654-7768 and the requested manual will be provided. Save this

Instruction Manual for future reference.

• If you do not understand any of the instructions, contact your Rosemount

representative for clarification.

• Follow all warnings, cautions, and instructions marked on and supplied

with the product.

• Inform and educate your personnel in the proper installation, operation,

and maintenance of the product.

• Install your equipment as specified in the Installation Instructions of the

appropriate Instruction Manual and per applicable local and national

codes. Connect all products to the proper electrical and pressure sources.

• To ensure proper performance, use qualified personnel to install, operate,

update, program, and maintain the product.

• When replacement parts are required, ensure that qualified people use

replacement parts specified by Rosemount. Unauthorized parts and pro-

cedures can affect the product’s performance and place the safe opera-

tion of your process at risk. Look alike substitutions may result in fire, elec-

trical hazards, or improper operation.

• Ensure that all equipment doors are closed and protective covers are in

place, except when maintenance is being performed by qualified persons,

to prevent electrical shock and personal injury.

Emerson Process Management

Liquid Division

2400 Barranca Parkway

Irvine, CA 92606 USA

Tel: (949) 757-8500

Fax: (949) 474-7250

http://www.raihome.com

About This Document

This manual contains instructions for installation and operation of the Model 430 Dissolved Oxygen

Sensor. The following list provides notes concerning all revisions of this document.

Rev. Level Date Notes

A 5/96 This is the initial release of the product manual. The manual has been refor-

matted to reflect the Emerson documentation style and updated to reflect any

changes in the product offering.

MODEL 430 DO TABLE OF CONTENTS

MODEL 430

DISSOLVED OXYGEN

TABLE OF CONTENTS

Section Title Page

1.0 DESCRIPTION AND SPECIFICATIONS................................................................. 1

1.0 Features and Applications ...................................................................................... 1

1.2 Operation ................................................................................................................ 1

1.3 Available Models...................................................................................................... 2

1.4 Specifications........................................................................................................... 2

1.5 Ordering Information ............................................................................................... 4

2.0 INSTALLATION ....................................................................................................... 5

2.1 General.................................................................................................................... 5

2.2 Unpacking and Inspection ...................................................................................... 5

2.3 Mechanical Installation ........................................................................................... 5

2.4 Electrical Installation................................................................................................ 5

3.0 MAINTENANCE ...................................................................................................... 9

3.1 General.................................................................................................................... 9

3.2 Recharging the Sensor............................................................................................ 9

4.0 TROUBLESHOOTING............................................................................................. 10

4.1 General.................................................................................................................... 10

4.2 Troubleshooting ....................................................................................................... 10

4.3 Bench Testing .......................................................................................................... 10

5.0 PARTS LIST ........................................................................................................... 11

5.1 General.................................................................................................................... 11

6.0 RETURN OF MATERIAL ......................................................................................... 15

6.1 General.................................................................................................................... 15

6.2 Warranty Repair....................................................................................................... 15

6.3 Non Warranty Repair ............................................................................................... 15

TABLE OF CONTENTS CONTINUED

LIST OF FIGURES

Number Title Page

1-1 Flow Through Senson Assemblies ......................................................................... 2

1-2 Optional Mounting Bracket ..................................................................................... 3

2-1 Code 01 and 02 Flow Through Installation ........................................................... 6

2-2 Sensor Dimensions ................................................................................................ 7

5-1 Model 430 (Codes 01 and 02) Dissolved Oxygen Sensor ..................................... 11

5-2 Model 430 Sensor Assembly .................................................................................. 12

5-3 Model 430 (Code 03) Dissolved Oxygen Sensor ................................................... 13

5-4 Model 430 (Code 04) Dissolved Oxygen Sensor.................................................... 14

LIST OF TABLES

Number Title Page

2-1 Electrical Connections ........................................................................................... 5

MODEL 430 DO TABLE OF CONTENTS

•

LARGE ELECTROLYTE RESERVOIR allows up to twelve months and often longer

between refills.

•

OPTIONAL MOUNTING BRACKET allows easy removal of the sensor from an aeration

basin without the use of tools.

•

MODULAR PRESSURE COMPENSATOR AND MEMBRANE RETAINER simplify recharg-

ing and membrane replacement.

• MEMBRANE RETAINER REPLACEMENT AND RECHARGING require no tools.

MODEL 430 DO SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

SECTION 1.0

GENERAL DESCRIPTION AND SPECIFICATIONS

1.1 FEATURES AND APPLICATIONS

The Rosemount Analytical

Model 430 Dissolved

Oxygen Sensor, used with the Model 1181 Dissolved

Oxygen Transmitter, measures oxygen levels in a vari-

ety of applications. The most widely used application is

the secondary phase of the waste treatment process

where a critical dissolved oxygen level must be main-

tained for the digestive process to occur. Other appli-

cations include water quality monitoring in natural bod-

ies of water such as rivers and streams, or any location

where adequate oxygen content is important to sustain

aquatic life.

The Model 430 Dissolved Oxygen Sensor is construct-

ed of PVC with an oxygen permeable Teflon

mem-

brane .

1.2 OPERATION

As oxygen passes through the Teflon membrane an

oxygen dependent electrochemical reaction takes

place between the gold cathode and silver anode in the

presence of the electrolyte. The resultant current flow

between these elements is proportional to the quantity

of oxygen which has entered the sensor.

Temperature and pressure compensation are both

standard features on the Model 430. Temperature com-

pensation is necessary for two reasons: First, the solu-

bility of oxygen in water decreases with an increase in

temperature; secondly, the permeability of the Teflon

membrane and the oxygen diffusion rate increase as

the temperature increases. For these reasons, it is

important for a dissolved oxygen measurement to be

accompanied by an accurate temperature measure-

ment. Temperature compensation is accomplished by

means of a thermistor located in the sensor housing,

and its associated circuitry in the analyzer.

Pressure compensation is a mechanical rather than

electronic correction. It is important for the tension on

the Teflon membrane to remain constant at all times,

even with sample pressure changes. Fluctuations in

membrane tension affect its diffusion characteristics.

By means of a pressure compensator the pressure on

the sample side of the compensator membrane is

transmitted to the electrolyte reservoir so the pressure

on both sides of the membrane remains equal. In this

manner, sample pressure changes do not affect the dif-

fusion rate of oxygen through the membrane.

The Teflon membrane is held in place by a retainer. A

water-tight seal is made with an O-ring between the

membrane and sensor reservoir. Membrane replace-

ment is rarely required, but in those situations when it

is necessary, the procedure can be performed quickly

and easily.

Since oxygen diffuses through the Teflon membrane at

a faster rate than through the sample, it is necessary to

continuously maintain a fresh sample in front of the

membrane. A stream velocity of approximately 1.5 feet

per second (0.5 m/s) is required to ensure that a fresh

sample is in contact with the membrane at all times.

Reg. U.S. Pat. Office for du Pont’s fluorocarbon resins.

MODEL 430 DO SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

1.3 AVAILABLE MODELS

The Model 430-01 and -02 Sensor is a flow through

assembly. The sensor is supplied in a 1-1/2 inch PVC

tee for installation into a process line.

The Model 430-03 Submersible Sensor is for use in

those applications where the required flow velocity can

be maintained without the use of an agitator. When the

measurement is being made in a stagnant pond or

other media where the minimum flow rate of 1.5 FPS

cannot be obtained, the Model 430-04 must be select-

ed. This model is designed for submersible use and is

provided with its own agitator to ensure adequate flow

velocity at the membrane.

The Models 430-03 and 04 may be provided with an

optional mounting bracket assembly. This bracket is

constructed of light weight aluminum and can be

adjusted to satisfy virtually any aeration basin mount-

ing requirement. Once installed, the probe can be

removed without the use of tools. A single locking pin

holds the assembly rigidly in place but allows it to be

easily removed for inspection or cleaning.

1.4 SPECIFICATIONS

Process Connection:

430-00/01 1-1/2 inch socket fitting

Wetted Materials: HOUSING - PVC

MEMBRANE - Teflon

PRESSURE COMPENSATOR - Neoprene

Temperature Compensation:

0 to 50°C (32 to 122°F) Automatic

Sample Pressure: 0-50 psig (345 kPa abs)

Submersible to 200 ft. (61 m).

Agitator Power Requirement: Model 430-04 only)

115 Vac, ±10 60 Hz (0.2 amp)

Cable Length (standard):

6.1 meters (20 ft) on sensor and agitator

Maximum Cable Length:

305 meters (1000 ft)

Operating Time Between Electrolyte Recharge:

Approximately 12 months or longer, depending upon

application

Sample Flow Requirements for Models 430-01-02-03:

1.5 feet per seconds (0.5 m/s)

FIGURE 1-1 Flow Through Assemblies

DWG. NO. REV.

40043019 A

MILLIMETER

INCH

MODEL 430 DO SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

FIGURE 1-2 Optional Mounting Bracket

DWG. NO. REV.

40043018 B

MILLIMETER

INCH

MODEL 430 DO SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

1.5 ORDERING INFORMATION. The Model 430 Dissolved Oxygen Sensor: Includes PVC body with integral,

oxygen-permeable membrane of Teflon

. Temperature and pressure compensators included. Compatible with

Model1181DO.

MODEL

430 DO DISSOLVED OXYGEN SENSOR

CODE MOUNTING HARDWARE

01 1-1/2” PVC flow cell, 90° flow

02 1-1/2” PVC flow cell, 180° flow

03 PVC union with 3/4” FNPT for submersion service

04 PVC union with 1” FNPT and agitator with 20 foot cable for submersion. Agitator motor requires

115 VAC power only.

499 DO 01 16 EXAMPLE

CODE MOUNTING HARDWARE

11 Stainless steel tag (specify marking)

14 Handrail mounting bracket (P/N 1000857) for use with junction box (see Code 17 below).

15 Handrail mounting bracket (P/N 1000856) for use with Model 803

17 Weatherproof, NEMA 4X junction box (P/N 22719-02)

NOTES:

Recommended interconnecting cable from sensor to transmitter is Belden 8434 or equivalent, available from Rosemount Analytical as P/N

9200074. Specify length.

Reg. U.S. Pat. Office for du Pont's fluorocarbon resins.

MODEL 430 DO SECTION 2.0

INSTALLATION

SECTION 2.0

INSTALLATION

2.1 GENERAL. This section provides instructions for

the Model 430 Dissolved Oxygen Sensor.

2.2 UNPACKING AND INSPECTION. Inspect the ship-

ping container and remove the sensor. Carefully check

the sensor and its associated hardware for any dam-

age. Report any damage to the carrier immediately.

2.3 MECHANICAL INSTALLATION. The sensor

comes in four different configurations. Follow the

instruction for the configuration being installed. See

Figure 2-2 for dimensions. Figure 1-2 illustrates

optional bracket assembly for sensor installation in

tanks or ponds.

2.4 Electrical Installation. Connect the sensor to the

transmitter as shown in Table 2-1.

2.3.1 Codes 01 and 02 (see Figure 2-1). These config-

urations are for flow through measurements. Install the

tee using 1-1/2 inch PVC. For the angle flow (Code

01), make sure the flow enters at the opening opposite

the sensor, so that the sample flows directly into the

membrane.

2.3.2 Codes 03 and 04 (see Figure 5-3 and Figure 5-

4). These configurations are for submersion into a tank

or pond. The Code 03 configuration requires a flow

past the sensor of 1.5 feet per second (0.5 m/s). The

Code 04 configuration is for stagnant or still tanks and

ponds.

Sensor Lead

Model 1181DO

1. (Red) silver anode TB2-4

2. Shield TB2-2

3. (White) T.C. element TB2-1

4. (Green) T.C. element TB2-3

5. (Black) gold cathode TB2-3

TABLE 2-1 Electrode Connections

MODEL 430 DO SECTION 2.0

INSTALLATION

FIGURE 2-1. Codes and 01 and 02 Flow Through Installation

DWG. NO. REV.

40043001 G

MILLIMETER

INCH

MODEL 430 DO SECTION 2.0

INSTALLATION

FIGURE 2-2. Code 03 Sensor Dimensions

DWG. NO. REV.

40043002 D

MILLIMETER

INCH

MODEL 430 DO SECTION 3.0

MAINTENANCE

SECTION 3.0

MAINTENANCE

3.1 GENERAL. Sensor maintenance consists of keep-

ing the sensor clean, recharging the sensor and

replacing the membrane. The sensor should be

cleaned with clean water and a soft cloth. Make sure

the membrane area is kept clean and free of any

accumulation of dirt, algae, fungus, hair, etc.

3.2 RECHARGING THE SENSOR. A recharge kit

(Rosemount analytical P/N 2002473) is required to

service the sensor.

Recharge the sensor as follows (see Figure 5-2):

1. Remove the sensor from its mounting.

2. Loosen the vent screw approximately 1-1/2 turns.

DO NOT REMOVE IT

3. Unscrew and remove the reservoir retainer from

the base. Use a strap wrench if the retainer is to

tight to remove by hand.

4. Pull the reservoir housing assembly from the base

WITHOUT rotating it. Hold sensor in a base-up

position to keep electrolyte from spilling out. If the

reservoir housing assembly is locked onto the

base, use a screwdriver at the parting lines to dis-

lodge the base from the reservoir housing assem-

bly. Do not damage the mating surfaces with the

screwdriver while separating the base from the

reservoir housing assembly.

CAUTION

The electrolyte (KCI) is a corrosive liquid

which could damage some materials and

may irritate the skin or eyes. If the electrolyte

comes in contact with the skin or eyes, wash

immediately with clean water.

5. Discard the O-ring, electrolyte, and reservoir

housing assembly.

6. Prepare the electrolyte solution as follows:

a. Pour electrolyte crystals into a beaker containing

100 milliliters of distilled or demineralizer water.

Stir until crystals are dissolved.

b. If it is desired to forego the stabilization period of

two hours, a dilution of the electrolyte may be

done by adding NaOH or KOH to adjust the pH of

the solution to 12 or greater.

c. The unused electrolyte solution can be saved for

future use. The pH should be rechecked prior to

use if the solution has been stored.

7. Fill the new reservoir housing assembly with elec-

trolyte to the hole in the inner wall of the reservoir

(approximately 3/4 full). Tap the reservoir lightly to

remove any air bubbles.

8. Rinse all parts of the base in distilled or deionized

water. To remove silver chloride from the silver

anode, use a fine grit sandpaper or a pencil eras-

er and rub lightly until the coating is removed.

Rinse the silver anode in distilled water until all

traces of grit are removed.

9. Lightly lubricate the O-rings with O-ring lube and

install the O-ring in the groove of the base.

10. Hold the reservoir housing assembly in an upright

position and carefully slide the base into the reser-

voir housing assembly, making sure the tip of the

post enters the membrane retainer. Some elec-

trolyte should seep out through the vent screw

while the reservoir housing assembly is being

pushed onto the base. Do not grip the pressure

compensator while pushing the reservoir housing

assembly onto the base.

CAUTION

In the following step, do not push the reser-

voir housing assembly onto the base too fast.

The orifices in the base vent screw are very

small and a quick surge of pressure could

damage the membrane. A stream of elec-

trolyte solution could be forced through the

vent screw while the reservoir housing

assembly is being installed.

11. Push the reservoir housing assembly onto the

base until the threads of the base and the reser-

voir retainer can be engaged. After the threads are

engaged, turn the reservoir retainer until it is fin-

ger-tight. Caution, over finger-tight may damage

membrane or base post.

NOTE

Do not touch or apply pressure to the mem-

brane.

12. Tighten the vent screw. Rinse the sensor with

clean water and dry with a lint-free cloth or towel.

13. The sensor is now ready for use.

4.1 GENERAL. This section contains troubleshooting

data for the Model 430 Sensor Assembly.

4.2 TROUBLESHOOTING THE MODEL 430

DISSOLVED OXYGEN SENSOR. The majority of

problems encountered in DO systems are because the

sensor is either improperly maintained or has an inter-

nal leakage causing improper temperature compen-

sator resistance and high impedance current paths

between elements of the sensor.

Disassemble the sensor completely by unscrewing the

reservoir retainer and pulling the reservoir housing

assembly straight out (refer to Figure 5-2). The mem-

brane may have dried onto the gold cathode. Soak this

loose with water as scraping will damage the gold tip.

Clean all the parts with clean water and dry them.

Check for visible damage (i.e., cracks, deep cuts, bro-

ken silver wires). Perform the following checks with an

ohmmeter. Check T.C. resistance between the green

and white wires. It should be 100K ohms at 25°C or per

the Temperature/Resistance Chart. Check continuity

between the red wire and the silver anode, and

between the black wire and the gold cathode (be care-

ful not to scratch the gold). Perform a high meg check

between the following (100 meg ohms minimum):

Shield to Black or Red or Green. If everything checks

O.K., the sensor should function after a proper

recharge. If the silver anode appears oxidized, it may

be cleaned with wet or dry 400 sandpaper. Also brush

the gold tip two or three times with the 400 sandpaper

in one direction only. Follow the recharge directions in

Section 3.2.

4.3 BENCH TESTING. Soak the electrode for 24 hours

with polarizing voltage applied (instrument), then air

calibrate to check for a response.

CAUTION

Care should be taken not to damage the

membrane made of “Teflon”.

1. Low readings and inability to calibrate are

generally the result of a coated membrane

and usually can be restored to service by

cleaning the sensor. Clean a coated mem-

brane by gently wiping the membrane with a

soft cloth or tissue.

Reg. U.S. Pat. Office for du Pont’s fluorocarbon resins.

2. Readings offscale and inability to calibrate

are usually caused by a damaged mem-

brane. If this is the case, replace the mem-

brane.

3. To check the membrane made of “Teflon”,

connect the negative (—) lead of an ohm-

meter to the cathode (black) lead and

place water saturated with salt on the

membrane. Touch the positive (+) lead to

the water. The meter should read open

(100 megohms or more). If the meter indi-

cates a short (less than 100 megohms),

replace the membrane (refer to Section

3.2).

4. To check the resistance of the temperature

compensator, connect an ohmmeter to the

green and white leads of the sensor. The

resistance should be as indicated at the

temperature listed below: If the resistance

as specified above cannot be achieved,

replace the sensor (Figure 5-2).

Temperature Resistance Chart

5. To check for shorted sensor leads, meas-

ure the resistance between one tempera-

ture compensator wire (green or white) and

the cathode (black) lead and anode (red)

lead. The meter should indicate an open

circuit (100 megohms or more). Repeat the

measurement using the other temperature

compensator wire. If the sensor shows a

short circuit, the sensor is defective and

should be replaced.

MODEL 430 DO SECTION 4.0

TROUBLESHOOTING

SECTION 4.0

TROUBLESHOOTING

TEMPERATURE RESISTANCE (ohms)

0°C 371.40K

10°C 214.50K

20°C 128 00K

25°C 100.00K

30°C 78.00K

40°C 49.80K

50°C 32.36K

MODEL 430 DO SECTION 5.0

PARTS LISTS

SECTION 5.0

PARTS LISTS

5.1 GENERAL. This section contains the replacement parts lists and illustrations for the Model 430 Sensor Assembly.

Parts are keyed with an item number. Use the illustration to locate the item number for the part in question. Then refer

to the accompanying parts list for the part number, description and quantity needed. The Usage Code column, where

used, identifies parts used on more than one assembly. If there is no code letter, the item is used on all assemblies

in that parts list.

Figure & Part Usage

Item No. Number Description Code Qty.

5-1 A SENSOR ASSY, Model 430 Dissolved Oxygen, angle flow (Code 01 ) A RF

B SENSOR ASSY, Model 430 Dissolved Oxygen, straight flow (Code 02) B RF

3 2002566 Tee Assy, angle flow A

4 2002567 Tee Assy, straight flow B

5 Union, 1” NPT

7 9550090 O-ring (Buna-N, 2-029)

8 1001021 Sensor Assy (see Figure 5-2 for details)

9 3001197 Gasket

FIGURE 5-1. Model 430 (Codes 01 and 02) Dissolved Oxygen Sensor

DWG. NO. REV.

40045052 A

MODEL 430 DO SECTION 5.0

PARTS LISTS

Part Number Description Qty.

3002384 Base 1

9550116 O-ring (2-018)* 1

2002572 Reservoir housing assembly with membrane* 1

3002385 Retainer ,reservoir 1

9550133 O-ring (2-004) 1

3002382 Screw, vent 1

2002473 Recharge Kit 1

FIGURE 5-2. Model 430 Sensor Assembly

DWG. NO. REV.

40043016 A

MODEL 430 DO SECTION 5.0

PARTS LISTS

FIGURE 5-3. Model 430 (Code 03) Dissolved Oxygen Sensor

DWG. NO. REV.

40043015 A

Figure & Part

Item No. Number Description Qty.

5-3 SENSOR ASSY, Model 430 Dissolved Oxygen, submersion (Code 13) RF

2 9330020 Union, 3/4” NPT RF

3 3001617 Gasket 1

4 1001021 Sensor Assy (see Figure 5-2 for details) 1

MODEL 430 DO SECTION 5.0

PARTS LISTS

FIGURE 5-4. Model 430 (Code 04) Dissolved Oxygen Sensor

DWG. NO. REV.

40043017 A

Figure & Part

Item No. Number Description Qty.

5-4 SENSOR ASSY, Model 430 Dissolved Oxygen, with agitator (Code 04) 1

2 9380053 Pump, submersible Attaching parts for item 2: 1

3 Screw, SPH SS (#8-32x3/8) 4

4 Screw, SPH SS (#8-32x3/8) 2

5 3001150 Holder Assy 1

6 9320057 Union, 1” NPT 1

7 3001197 Gasket 1

8 1001021 Sensor assy (see Figure 5-2 for details) 1

Model 430 DO SECTION 6.0

RETURN OF MATERIAL

SECTION 6.0

RETURN OF MATERIAL

6.1 GENERAL. To expedite the repair and return of

instruments, proper communication between the cus-

tomer and the factory is important. A return material

authorization (RMA) number is required. Call (949)

757-8500. The "Return of Materials Request" form is

provided for you to copy and use in case the situation

arises. The accuracy and completeness of this form

will affect the processing time of your materials.

6.2 WARRANTY REPAIR. The following is the proce-

dure for returning instruments still under warranty.

1. Contact the factory for authorization.

2. Complete a copy of the “Return of Materials

Request” form as completely and accurately as

possible.

3. To verify warranty, supply the factory sales order

number or the original purchase order number. In

the case of individual parts or sub-assemblies, the

serial number on the mother unit must be sup-

plied.

4. Carefully package the materials and enclose your

“Letter of Transmittal” and the completed copy of

the “Return of Materials Request” form. If possi-

ble, pack the materials in the same manner as it

was received.

IMPORTANT

Please see second section of “Return of

Materials Request Form”. Compliance to

the OSHA requirements is mandatory for

the safety of all personnel. MSDS forms

and a certification that the instruments

have been disinfected or detoxified are

required.

5. Send the package prepaid to:

Rosemount Analytical Inc.

2400 Barranca Parkway

Irvine, CA 92606

Attn: Factory Repair

Mark the package: Returned for Repair RMA#

Model No. ____

6.3 NON WARRANTY REPAIR. Contact Factory For

Authorization

1. Contact the factory for authorization.

2. Fill out a copy of the “Return of Materials Request”

form as completely and accurately as possible.

3. Include a purchase order number and make sure

to include the name and telephone number of the

right individual to be contacted should additional

information be needed.

4. Do Steps 4 and 5 of Section 6.2.

NOTE

Consult the factory for additional infor-

mation regarding service or repair.

MODEL CFA 3000 RETURN OF MATERIAL

RETURN OF MATERIAL

GENERAL.

To expedite the repair and return of instruments, proper communication between the customer and the factory is

important. Before returning a product for repair, call 1-949-757-8500 for a Return Materials Authorization (RMA)

number.

WARRANTY REPAIR.

The following is the procedure for returning instruments still under warranty:

1. Call Emerson Process Management for authorization.

2. To verify warranty, supply the factory sales order number or the original purchase order number. In the case

of individual parts or sub-assemblies, the serial number on the unit must be supplied.

3. Carefully package the materials and enclose your “Letter of Transmittal” (see Warranty). If possible, pack the

materials in the same manner as they were received.

4. Send the package prepaid to:

Emerson Process Management

Liquid Division

2400 Barranca Parkway

Irvine, CA 92606

Attn: Factory Repair

RMA No. ____________

Mark the package: Returned for Repair

Model No. ____

NON-WARRANTY REPAIR.

The following is the procedure for returning for repair instruments that are no longer under warranty:

1. Call Emerson Process Management for authorization.

2. Supply the purchase order number, and make sure to provide the name and telephone number of the individ-

ual to be contacted should additional information be needed.

3. Do Steps 3 and 4 of the Warranty Repair section above.

NOTE

Consult the factory for additional information regarding service or repair.

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Emerson Dissolved Oxygen Sensor Model 430 DO Owner's manual

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